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标题：Effect of silicon carbide addition on the microstructure, hardness and densification properties of spark plasma sintered Ni-Zn-Al alloy
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作者：Katlego M. Mampuru ; Emmanuel Ajenifuja ; A.P.I. Popoola 等
期刊名称：Journal of King Saud University - Science
印刷版ISSN：1018-3647
出版年度：2019
卷号：31
期号：4
页码：1122-1126
DOI：10.1016/j.jksus.2019.01.010
语种：English
出版社：Elsevier
摘要：AbstractEffect of silicon carbide (SiC) additions on the physico-chemical properties of nickel-zinc-aluminium (Ni-Zn-Al) alloy prepared by spark plasma sintering technique is investigated. Elemental powder matrix samples were prepared with different amounts of SiC (1–4 wt%) and were mixed in a tubular mixer for 5 h at 49 rpm. The metal-ceramic composite powders were pressed and sintered at 850 °C with 100 °C/min heating rates, 10 min holding time and a pressure of 50 MPa. Hard disk-shaped metal matrix composite pellets (ᴓ = 40 mm, thickness = 5 mm) were obtained. Chemical, physical and microstructural properties of sintered composite samples were studied. The results show that SiC addition particles influence the physical and microstructural characteristics metal matrix composites. The samples demonstrated significant increase in relative density (83–96.53%) and hardness (132–228.36 HV) with increase in SiC additions. Compositional analysis indicated predominant nickel and silicon carbide in identified phases.
关键词：Nickel;Silicon carbide;Spark plasma sintering;Microstructure;Microhardness